Re: [gentoo-user] problems getting systemd to work

["Canek Peláez Valdés" <caneko@gmail.com>]

On Fri, May 16, 2014 at 12:17 PM,  <covici@ccs.covici.com> wrote:
[snip]
>> I don't understand the current situation .So now you get ALL your
>> volumes activated, or not?
>
> Yep, they are all activated and they all get mounted.

Cool, one problem less.

>> > Now for some systemd problems.  The root file system was read only when
>> > I logged in, but I could remount it rw -- not sure why this was
>> > happening.
>>
>> Set systemd.log_level=debug in your command line, and post the exit
>> from journalctl -b.
>
> I had debug in the command line by itself, would that make the correct
> log_level?  The file is quite large, should I send it to you privately?

I don't think is necessary, I may have found the real problem (see below).

>> >  Some units did start, but most did not.  Whenever I tried to
>> > start one manually, I got a message like the following:
[snip]
>> > No matter what unit I tried to start I would get such a  message about
>> > the service.mount.
>>
>> That sounds like a problem with the cgroups hierarchy (which uses a
>> virtual filesystem). I don't remember seeing a problem like that
>> before.
>>
>> > Also, even though my network names were correct, they did not come up,
>> > but I will try to look in the logs to see why not.
> I wrote a service file to start my network adaptors, here it is:
> network@.service
>
>
> [Unit]
> Description=Network Connectivity for %i
> Wants=network.target
> Before=network.target
> BindsTo=sys-subsystem-net-devices-%i.device
> After=sys-subsystem-net-devices-%i.device
> [Service]
> Type=oneshot
> RemainAfterExit=yes
> EnvironmentFile=/etc/conf.d/network@%i
> ExecStart=/usr/bin/ip link set dev %i up
> ExecStart=/usr/bin/ip addr add ${address}/${netmask} broadcast ${broadcast} dev %i
> ExecStart=/bin/bash -c 'test -n ${gateway} && /usr/bin/ip route add default via
> ${gateway}'
> ExecStart=/bin/bash -c 'test -f /etc/conf.d/postup@%i.sh&&/bin/bash  /etc/conf.d/postup@%i.sh
> ExecStop=/usr/bin/ip addr flush dev %i
> ExecStop=/usr/bin/ip link set dev %i down
> [Install]
> WantedBy=network.target

Did you enabled network@ifaca.service? Also, WantedBy=network.target
doesn't do what you probably think it does (check [1]... and BTW, I
forgot my last footnote, is now on [2]).

I would use WantedBy=multi-user.target.

>> systemd will not (AFAIK) start your network, and before the 209 or 210
>> version it needed helper program (NetwokrManager, connman, ip,
>> ifconfig, etc.) to do it. Now it includes networkd, but you need to
>> set up .network files (like .service files) to configure it. See [1].
>>
>> > So we have made some progress, but still a long way to go yet.  Note
>> > also, that I am not booting into a display manager, just a regular
>> > console.
>> >
>> >
>> > What a lot of work just to get the system booted!
>>
>> Well, you have a setup that is not, by any means, simple. Also, in my
>> experience old LVM configurations seem to cause a lot of troubles to
>> bring to what systemd expects.
>>
>> John, could you also post here your kernel config? Those cgroups
>> errors *may* be related to some missing functionality from the kernel.

[snip kernel config]

John, your kernel is incorrectly configured to be used by systemd.
When you installed systemd, a warning should have appeared about some
missing configure options; you either didn't saw or ignored those
warnings. Install systemd again so you can see them.

From what I can tell, you are missing *AT LEAST* the following options:

CONFIG_AUTOFS4_FS
CONFIG_DMIID
CONFIG_FANOTIFY
CONFIG_INOTIFY_USER
CONFIG_PROC_FS
CONFIG_SYSFS

John, if you don't set them, systemd *CANNOT WORK PROPERLY*. They are
mandatory. I'm surprised you are able to boot to a semi-working state.

Yes, migrating to systemd is a lot of work. But if you don't see (or
ignore) your system messages, that work gets multiplied several times.

Reconfigure, recompile, and reinstall your kernel (don't forget to
reinstall the modules!), regenerate your initramfs, update lilo (if I
remember correctly, you need to run lilo -something-or-another every
time you change kernel and/or initramfs), and try again.

Regards

[1] http://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/
[2] http://www.freedesktop.org/software/systemd/man/systemd.network.html
-- 
Canek Peláez Valdés
Profesor de asignatura, Facultad de Ciencias
Universidad Nacional Autónoma de México